David Sterba 4a19c1cee0 btrfs: add error messages to all unrecognized mount options
commit e3a4167c880cf889f66887a152799df4d609dd21 upstream.

Almost none of the errors stemming from a valid mount option but wrong
value prints a descriptive message which would help to identify why
mount failed. Like in the linked report:

  $ uname -r
  v4.19
  $ mount -o compress=zstd /dev/sdb /mnt
  mount: /mnt: wrong fs type, bad option, bad superblock on
  /dev/sdb, missing codepage or helper program, or other error.
  $ dmesg
  ...
  BTRFS error (device sdb): open_ctree failed

Errors caused by memory allocation failures are left out as it's not a
user error so reporting that would be confusing.

Link: https://lore.kernel.org/linux-btrfs/9c3fec36-fc61-3a33-4977-a7e207c3fa4e@gmx.de/
CC: stable@vger.kernel.org # 4.9+
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-29 09:03:19 +02:00
..
2021-08-19 09:02:55 +09:00
2022-06-22 14:22:05 +02:00
2021-08-26 22:28:02 +02:00
2022-06-09 10:22:55 +02:00
2021-12-29 12:28:59 +01:00
2021-09-03 15:33:47 -07:00
2021-08-16 10:50:32 -06:00
2022-05-15 20:18:52 +02:00
2021-08-19 09:02:55 +09:00
2021-11-25 09:48:46 +01:00
2022-06-09 10:23:09 +02:00
2021-09-09 13:25:49 -07:00
2022-06-09 10:23:32 +02:00
2021-08-18 22:08:24 +02:00
2021-12-14 10:57:15 +01:00
2021-08-10 17:57:22 +02:00